PUCCH Control Information Transmission via Dynamic Resource Allocation
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in transmitting control information, particularly in resource allocation and channel formats, which affect the overall performance of control information transmission in wireless communication systems.
Innovation Solution
The development of a method and apparatus for efficiently transmitting control information using a new channel format and signal processing technique, specifically designed for wireless communication systems that support carrier aggregation, allowing for improved resource allocation and enhanced control information transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional channel formats and resource allocation methods are used for control information transmission, then system compatibility is maintained, but transmission efficiency and resource utilization deteriorate
Solution Approach 1:
The patent implements dynamic resource allocation for PUCCH transmission by allowing the base station to flexibly assign physical resource blocks based on current system conditions and control information load. This dynamic approach enables the system to adapt to varying traffic patterns and maintain high transmission efficiency without requiring complex fixed structures, resolving the contradiction between productivity improvement and device complexity reduction.
Solution Approach 2:
The patent changes key transmission parameters including cyclic shift values, orthogonal cover codes, and resource block assignments to optimize control information transmission. By dynamically adjusting these parameters based on channel conditions and traffic requirements, the system achieves improved transmission efficiency while maintaining compatibility with existing LTE frameworks, thus resolving the contradiction between productivity and complexity.
2Reliability
If more resources are allocated for control information transmission, then transmission reliability improves, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent enables physical resource blocks to serve multiple purposes by allowing dynamic allocation for both control information (PUCCH) and data transmission (PUSCH) based on system needs. This multi-functional resource allocation ensures that resources are dedicated to control information when reliability is critical, while being released for data transmission when efficiency is prioritized, thus resolving the contradiction between reliability improvement and resource utilization.
Solution Approach 2:
The patent implements dynamic resource allocation where the base station adjusts the amount of resources dedicated to control information transmission based on real-time system conditions, traffic load, and reliability requirements. This dynamic adjustment ensures optimal resource utilization while maintaining sufficient resources for reliable control information transmission, resolving the contradiction between reliability and resource efficiency.
3Productivity
If carrier aggregation is implemented to increase bandwidth, then data transmission capacity improves, but control information transmission complexity increases
Solution Approach 1:
The patent segments control information transmission by associating it with specific downlink carriers and using corresponding uplink resources for feedback. This segmentation approach allows the system to manage control information from multiple aggregated carriers in an organized manner, reducing the complexity of handling control information across multiple carriers while maintaining the high data transmission capacity provided by carrier aggregation.
Solution Approach 2:
The patent introduces a standardized resource allocation mechanism that acts as an intermediary between multiple aggregated carriers and the control information feedback channel. This intermediary allocation strategy simplifies the management of control information by providing a unified approach to resource assignment across multiple carriers, thus reducing the complexity increase that would otherwise result from carrier aggregation.
Data Source
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AI summary
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method for transmitting control information through a PUCCH in a wireless communication system and an apparatus thereof, comprising the steps of: dividing a modulation symbol set for the control information so that the divided sets are equivalent to two slots on the PUCCH; spreading the modulation symbol sets divided to be equivalent to first slots, by using a first code, so that the spread sets are equivalent to a plurality of SC-FDMA symbols; DFT-converting, in an SC-FDMA symbol unit, the modulation symbol sets spread to be equivalent to the plurality of SC-FDMA symbols on the first slots; spreading the modulation symbol sets divided to be equivalent to second slots, by using a second code, so that the divided sets are equivalent to a plurality of SC-FDMA symbols; DFT-converting, in an SC-FDMA symbol unit, the modulation symbol sets spread to be equivalent to the plurality of SC-FDMA symbols on the second slots; and transmitting DFT-converted signals through the corresponding SC-FDMA symbols on the first and second slots, wherein the length of the second code is varied according to the number of the SC-FDMA symbols for PUCCH transmission.